138 in 1 Jamma PCB with SD Card (XinYe Arm Jamma Board) – Quick file system firmware reversing engineering notes

PATH=/sbin:/bin:/usr/sbin:/usr/bin
runlevel=S
prevlevel=N
umask 022
export PATH runlevel prevlevel

echo st.

#
# Trap CTRL-C &c only in this shell so we can interrupt subprocesses.
#
trap ":" INT QUIT TSTP
/bin/hostname FriendlyARM
/bin/mount -n -t proc proc /proc

cmdline=`cat /proc/cmdline`

ROOT=none
ROOTFLAGS=
ROOTFSTYPE=
NFSROOT=
IP=
INIT=/sbin/init
#run_fs_image=/images/linux/rootfs_xin1arm_sdhotplug.ext3

for x in $cmdline ; do
case $x in
root=*)
ROOT=${x#root=}
;;
rootfstype=*)
ROOTFSTYPE="-t ${x#rootfstype=}"
;;
rootflags=*)
ROOTFLAGS="-o ${x#rootflags=}"
;;
init=*)
INIT=${x#init=}
;;
nfsroot=*)
NFSROOT=${x#nfsroot=}
;;
ip=*)
IP=${x#ip=}
;;

esac
done

if [ ! -z $NFSROOT ] ; then
echo $NFSROOT | sed s/:/\ /g > /dev/x ; read sip dir < /dev/x
echo $IP | sed s/:/\ /g > /dev/x; read cip sip2 gip netmask hostname device autoconf < /dev/x
rm /dev/x
#echo $sip $dir $cip $sip2 $gip $netmask $hostname $device $autoconf
mount -t nfs $NFSROOT /r -o nolock,proto=tcp
#[ -e /r/dev/console ] || exec /bin/sh

elif [ ! -z $run_fs_image ] ; then
#lilxc
#echo $run_fs_image
echo sdroot.

if [ ! -e /dev/mmcblk0p2 ] ; then
echo "p2 not found."
reboot
sleep 5
fi

ROOTFSTYPE="-t ext3"
for i in 1 2 3 4 5 ; do
#/bin/mount -n -o sync -o noatime -o nodiratime -o ro -t vfat /dev/mmcblk0p1 /sdcard && break
/bin/mount -n -o sync -o noatime -o nodiratime -o ro -t ext3 /dev/mmcblk0p2 /sdcard && break
echo Waiting for SD Card...

if [ $i = 4 ] ; then
echo " p2 failed. "
reboot
sleep 5
break;
fi

sleep 1
done

#echo ------begin----------------------------------------
#sleep 1
#lilxc
#ls -l /dev
#sleep 1
#echo -----------------------------------------------
#ls -l /sdcard
#sleep 1
#echo ------end------------------------------------------

#/sbin/losetup /dev/loop0 /sdcard/$run_fs_image
#/bin/mount $ROOTFSTYPE /dev/loop0 /r
#/bin/mount $ROOTFSTYPE -o noatime -o nodiratime -o ro /dev/mmcblk0p2 /r > /dev/null 2>&1
/bin/mount $ROOTFSTYPE -n -o noatime -o nodiratime -o ro /dev/mmcblk0p3 /r > /dev/null 2>&1
mount -o move /sdcard /r/sdcard
#/sbin/losetup /dev/loop1 /r/sdcard/swap
#/sbin/swapon /dev/loop1

else
# /bin/mount -n $ROOTFLAGS $ROOTFSTYPE $ROOT /r
# echo "Readonly mount...(lilxc)"
# mount -n -t yaffs2 -o noatime -o nodiratime -o ro /dev/mtdblock2 /r
# mount -n -t yaffs2 -o noatime -o nodiratime /dev/mtdblock2 /r

mount -n -t yaffs2 -o noatime -o nodiratime -o ro /dev/mtdblock2 /r

if [ -e /r/home/plg/reboot ]; then
umount /r
mount -n -t yaffs2 -o noatime -o nodiratime /dev/mtdblock2 /r
fi

fi

ONE_WIRE_PROC=/proc/driver/one-wire-info
ETC_BASE=/r/etc
[ -d /r/system/etc ] && ETC_BASE=/r/system/etc
[ -e $ETC_BASE/ts.detected ] && . $ETC_BASE/ts.detected
[ -z $CHECK_1WIRE ] && CHECK_1WIRE=Y
if [ $CHECK_1WIRE = "Y" -a -e $ONE_WIRE_PROC ] ; then
if read lcd_type fw_ver tail < $ONE_WIRE_PROC ; then
if [ x$lcd_type = "x0" -a x$fw_ver = "x0" ] ; then
TS_DEV=/dev/touchscreen
else
TS_DEV=/dev/touchscreen-1wire
echo "1Wire touchscreen OK"
fi
if [ -e $ETC_BASE/friendlyarm-ts-input.conf ]; then
sed "s:^\(TSLIB_TSDEVICE=\).*:\1$TS_DEV:g" $ETC_BASE/friendlyarm-ts-input.conf > $ETC_BASE/ts-autodetect.conf
mv $ETC_BASE/ts-autodetect.conf $ETC_BASE/friendlyarm-ts-input.conf -f
echo "CHECK_1WIRE=N" > $ETC_BASE/ts.detected
fi
fi
fi

[ -e /r/etc/friendlyarm-ts-input.conf ] && . /r/etc/friendlyarm-ts-input.conf
[ -e /r/system/etc/friendlyarm-ts-input.conf ] && . /r/system/etc/friendlyarm-ts-input.conf
export TSLIB_TSDEVICE

#lilxc debug here
#/bin/mount -n -o sync -o noatime -o nodiratime -t vfat /dev/mmcblk0p1 /sdcard
#cp /sdcard/lktcmd /r/tmp
#exec /bin/sh

#! /bin/sh

PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/bin:
runlevel=S
prevlevel=N
umask 022
export PATH runlevel prevlevel

#
# Trap CTRL-C &c only in this shell so we can interrupt subprocesses.
#
trap ":" INT QUIT TSTP
/bin/hostname FriendlyARM

[ -e /proc/1 ] || /bin/mount -n -t proc none /proc
[ -e /sys/class ] || /bin/mount -n -t sysfs none /sys
[ -e /dev/tty ] || /bin/mount -t ramfs none /dev
/bin/mount -n -t usbfs none /proc/bus/usb

echo /sbin/mdev > /proc/sys/kernel/hotplug
/sbin/mdev -s
/bin/hotplug
# mounting file system specified in /etc/fstab
mkdir -p /dev/pts
mkdir -p /dev/shm
/bin/mount -n -t devpts none /dev/pts -o mode=0622
/bin/mount -n -t tmpfs tmpfs /dev/shm
/bin/mount -n -t ramfs none /tmp
/bin/mount -n -t ramfs none /var
mkdir -p /var/empty
mkdir -p /var/log
mkdir -p /var/lock
mkdir -p /var/run
mkdir -p /var/tmp

/sbin/hwclock -s

echo " " > /dev/tty1
echo "System starting... " > /dev/tty1
syslogd

#/etc/rc.d/init.d/netd start
#echo " " > /dev/tty1
#echo "Starting networking..." > /dev/tty1
#sleep 1
#/etc/rc.d/init.d/httpd start
#echo " " > /dev/tty1
#echo "Starting web server..." > /dev/tty1
#sleep 1
#/etc/rc.d/init.d/leds start
#echo " " > /dev/tty1
#echo "Starting leds service..." > /dev/tty1
#echo " "
#sleep 1

/etc/rc.d/init.d/mkjoy
#echo " " > /dev/tty1
#echo "System Starting... " > /dev/tty1
#echo " " > /dev/tty1

#echo " " > /dev/tty1
/etc/rc.d/init.d/alsaconf start
#echo "Loading sound card config..." > /dev/tty1
#echo " "

#/sbin/ifconfig lo 127.0.0.1
#/etc/init.d/ifconfig-eth0

#/bin/qtopia &
#echo " " > /dev/tty1
#echo "Starting Qtopia, please waiting..." > /dev/tty1

cd /sdcard
./run.sh
reboot